Telephone set add-on accessory stand



FIG. 1 is a front, top and right side perspective view showing my newdesign;

FIG. 2 is a top plan view;

FIG. 3 is a right side elevational view;

FIG. 4 is a back elevational view;

FIG. 5 is a front elevational view; and

FIG. 6 is a bottom plan view.

The ornamental design for a telephone set add-on accessory stand,substantially as shown and described.